West River is a river located in the state of South Dakota, USA. It flows through the western part of the state, eventually joining the Missouri River. The river is known for its scenic landscapes and recreational opportunities, including fishing, kayaking, and hiking along its banks. The West River region is characterized by rolling hills, grasslands, and a variety of wildlife. It is part of the larger Missouri River Basin, which is significant for its ecological and economic importance. The river also plays a role in local agriculture and provides water resources for nearby communities.